Transmission method and apparatus, communication node, and storage medium

Patent metadata

Field	Value
Publication number	US-12414115-B2
Application number	US-202117922527-A
Country	US
Kind code	B2
Filing date	Apr 29, 2021
Priority date	Apr 30, 2020
Publication date	Sep 9, 2025
Grant date	Sep 9, 2025

Abstract

Provided are a transmission method and apparatus, a communication node, and a storage medium. The transmission method includes: determining control channel information and activated Transmission Configuration Indicator (TCI); determining a correspondence between the control channel information and the activated TCI; and receiving a control channel corresponding to the control channel information based on the correspondence and the activated TCI.

First claim

What is claimed is:

1. A transmission method, comprising:
determining control channel information and activated Transmission Configuration Indicator (TCI);
determining a correspondence between the control channel information and the activated TCI; and
receiving a control channel corresponding to the control channel information based on the correspondence and the activated TCI,
wherein the determining the correspondence between the control channel information and the activated TCI comprises:
determining a correspondence between different groupings of search space sets (SSSs) and the activated TCI, wherein the different groupings of the SSSs correspond to different activated TCI, and
wherein the different groupings of the SSSs are determined based on one of the following parameters of SSSs associated with one CORESET or all configured SSSs: a numerical order of SSS indices, parity of the SSS indices, an SSS time domain parameter, or explicit configuration signaling.

2. The method of claim 1 , wherein determining the activated TCI comprises:
determining L pieces of activated TCI, wherein L is greater than or equal to 1; and
in a case where L is greater than 1, the L pieces of activated TCI being TCI in different groups or a same group, and each group comprising different configured TCI; or the L pieces of activated TCI being different TCI selected from configured TCI.

3. The method of claim 1 , wherein the control channel information comprises at least one of: control channel time domain resource, control channel frequency domain resource, an SSS, a control resource set (CORESET), a parameter configured in the CORESET by higher layer signaling, or a parameter configured in the SSS by the higher layer signaling.

4. The method of claim 1 , wherein the determining the correspondence between the control channel information and the activated TCI comprises:
determining a correspondence between different groups of monitoring time units in an SSS and the activated TCI, wherein the different groups of the monitoring time units correspond to different activated TCI;
wherein each of the monitoring time units comprises at least one of: a monitoring occasion, a monitoring span, or a monitoring slot; and
the different groups of the monitoring time units in the SSS are grouped based on a numerical order or parity of indices of the monitoring time units.

5. The method of claim 4 , further comprising:
acquiring at least one of first signaling or second signaling;
wherein the first signaling indicates that the control channel corresponding to the control channel information is received based on the correspondence between the control channel information and the activated TCI; and
the second signaling indicates at least one of the following: a grouping mode of the different groups of the monitoring time units in the SSS or a group to which the SSS belongs.

6. The method of claim 1 , wherein in a case of grouping based on the SSS time domain parameter, the grouping of the SSSs is determined based on a duration configured in the CORESET corresponding to the SSS, a number of symbols in an interval between monitoring occasions, and k time domain symbols, wherein a value range of k is determined based on the duration configured in the CORESET and a preset value, and the number of symbols between the monitoring occasions is determined by the SSS time domain parameter;
wherein the SSS time domain parameter comprises at least one of the following configured in the SSS by higher layer signaling: monitoring periodicity, a monitoring offset, or a monitoring pattern.

7. The method of claim 1 , wherein the determining the correspondence between the control channel information and the activated TCI comprises:
determining a correspondence between control channel frequency domain resource and the activated TCI, wherein different control channel frequency domain resources correspond to different activated TCI;
wherein the different control channel frequency domain resources are determined based on an index value of an index of a physical resource block (PRB) of frequency domain resource configured in a CORESET; or the different control channel frequency domain resources comprise frequency domain resource before duplication and frequency domain resource after duplication, wherein the frequency domain resource before duplication and the frequency domain resource after duplication do not overlap, and an index value of a PRB of the frequency domain resource after duplication is greater than or less than an index value of a PRB of the frequency domain resource before duplication.

8. The method of claim 7 , further comprising: acquiring at least one of: third signaling, fourth signaling, or fifth signaling;
wherein the third signaling indicates that the different control channel frequency domain resources are determined based on the index value of the index of the PRB of the frequency domain resource configured in the CORESET and indicates that the control channel corresponding to the control channel information is received based on the correspondence between the control channel information and the activated TCI;
wherein the fourth signaling indicates that the different control channel frequency domain resources comprise the frequency domain resource before duplication and the frequency domain resource after duplication and indicates that the control channel corresponding to the control channel information is received based on the correspondence between the control channel information and the activated TCI; and
wherein the fifth signaling indicates a position of the frequency domain resource after duplication.

9. The method of claim 1 , wherein the determining the correspondence between the control channel information and the activated TCI comprises:
determining a correspondence between a scrambling identity (ID) of a demodulation reference signal (DMRS) of the control channel corresponding to the control channel information and the activated TCI, wherein different scrambling IDs correspond to different activated TCI.

10. The method of claim 1 , wherein in a preset condition, the method further comprises one of the following:
each monitoring time unit of an SSS corresponding to one piece of activated TCI, monitoring time units with adjacent indices corresponding to different activated TCI, and receiving a corresponding control channel by using the TCI corresponding to the monitoring time unit;
receiving a corresponding control channel by using the activated TCI corresponding to an SSS with a lowest or highest SSS identity;
receiving a corresponding control channel by using the activated TCI corresponding to a CORESET with a lowest or highest CORESET identity;
receiving a corresponding control channel by using the activated TCI corresponding to a CORESET with a lowest or highest CORESET identity and a same CORESET pool index as the SSS; or
receiving a corresponding control channel by using the activated TCI corresponding to a CORESET with a lowest or highest CORESET identity and a same CORESET pool index as the CORESET.

11. The method of claim 10 , wherein the preset condition comprises at least one of: not having an ability to receive beams in at least two beam directions; being on a monitoring time unit where different SSSs overlap; or not receiving the activated TCI.

12. A transmission method, comprising:
indicating control channel information and activated Transmission Configuration Indicator (TCI); and
sending a control channel corresponding to the control channel information,
wherein determining the correspondence between the control channel information and the activated TCI comprises

Assignees

• Zte Corp

Inventors

• Pan Yu
• Jiang Chuangxin
• Zhang Shujuan
• Lu Zhaohua
• Gao Bo
• He Zhen
• Yan Wenjun

Classifications

• H04W72/0453

  Resources in frequency domain, e.g. a carrier in FDMA · CPC title

• H04W72/0446

  Resources in time domain, e.g. slots or frames · CPC title

• H04L5/0023

  Time-frequency-space · CPC title

• H04L5/0053

  Allocation of signalling, i.e. of overhead other than pilot signals · CPC title

• H04W72/20 Primary

  Control channels or signalling for resource management · CPC title